/*
 * Copyright (c) 2011, Petr Panteleyev <petr@panteleyev.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
 *    3. The name of the author may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.panteleyev.livejournal;

import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.TransferHandler;
import org.panteleyev.ljapi.LJFriend;

public class FriendsInNotInTransferHandler extends TransferHandler {
    private FriendsFrame frame;

    FriendsInNotInTransferHandler(FriendsFrame frame) {
        this.frame = frame;
    }

    @Override
    public int getSourceActions(JComponent c) {
        return MOVE;
    }

    @Override
    protected Transferable createTransferable(JComponent c) {
        if (!frame.getProfile().isOnline()) {
            return null;
        }

        if (!(c instanceof JList)) {
            return null;
        }

        List<LJFriend> values = ((JList)c).getSelectedValuesList();
        ArrayList<LJFriend> data = new ArrayList<>(values.size());
        for (LJFriend f : values) {
            data.add((LJFriend)f);
        }
        return new FriendsInNotInDataTransfer(data);
    }

    @Override
    public boolean canImport(TransferSupport info) {
        if (!info.isDrop()) {
            return false;
        }

        if (!info.isDataFlavorSupported(FriendsInNotInDataTransfer.FLAVOUR)) {
            return false;
        }

        return true;
    }

    @Override
    public Icon getVisualRepresentation(Transferable t) {
        return super.getVisualRepresentation(t);
    }

    @Override
    public boolean importData(TransferSupport info) {
        if (!canImport(info)) {
            return false;
        }

        ArrayList<LJFriend> data = null;
        try {
            Transferable t = info.getTransferable();
            data = (ArrayList<LJFriend>)t.getTransferData(FriendsInNotInDataTransfer.FLAVOUR);
        } catch (UnsupportedFlavorException | IOException e) {
            return false;
        }

        frame.moveFriendsFromToGroup(data, (JList)info.getComponent());
        return true;
    }


}
